Why does my twitter code not work? - iOS

float startTime;
startTime = Time.timeSinceLevelLoad;
Application.OpenURL (“twitter:///user?screen_name=PlusIntStudios”);
if(Time.timeSinceLevelLoad - startTime <= 1f)

This code opens Twitter to the correct place, but then it swaps to Safari and opens the twitter webpage. I am using the exact same code for Facebook and that works fine, so whats the deal with my Twitter code not working?

Try inserting a yield after you call the first OpenURL.